Atreus assists Kratos in combat with his trusty Talon Bow. At first he can be called on to shoot his standard arrows, but eventually he begins attacking enemies directly with his bow, using melee strikes and a grapple move. Complete the Alfheim portion of the Journey to receive Light Arrows, then defeat the dragon at the top of the Mountain for Shock Arrows.
By this time, Atreus is a fighting machine and a huge asset in combat. His bow is improved with upgrades, along with Magic and Expert Combat Skills. You also find Runic Summons as you explore the realms, which give Atreus the ability to call on animal spirits to aid in battle. In this section, we list all of these improvements, when they become available, and what they cost.